Proximity switch, product range: E53 series capacitive, capacitive sensors, connection: 3-wire, rated switching distance: Sn= 20 mm, design (external dimensions): M30 x 1.5 mm, rated operating voltage: Ue= 10 - 30 V DC, installation type: flush, switching type: NPN, connection options: plug connection M12 x 1, contacts S = normally open: 1 S, material: plastic, protection class: IP65